China's isolationism is mainly self-imposed. Google, Facebook, Twitter, and most of the modern internet is banned there. It has very strict currency controls th

China's isolationism is mainly self-imposed. Google, Facebook, Twitter, and most of the modern internet is banned there. It has very strict currency controls that prevent its citizens from transferring funds out. Foreign businesses are very restricted in what they're allowed to do and what they can own. And if they make money, it can be very hard to get it out.